card_issuance(card_name, issue_month, issued_count)
For each card, find its earliest month in the table and return the percent change
in issued_count from that launch month to the month that follows it in the
data.
Return card_name, launch_month and month2_growth_pct rounded to two
decimals, ordered by card_name. Cards with only one month are left out.
"The following month" means the next month present for that card, which is not always the next calendar month.
Tables
card_issuance
card_name issue_month issued_count
--------- ----------- ------------
Chase 2026-01-01 1000
Chase 2026-02-01 1500
Chase 2026-03-01 1200
Gap Card 2026-01-01 400
Gap Card 2026-04-01 300
Solo 2026-05-01 900
Expected result
card_name launch_month month2_growth_pct
--------- ------------ -----------------
Chase 2026-01-01 50.00
Gap Card 2026-01-01 -25.00