-42.28% is the change from 615 to 355
Calculation steps:
[( 355 - 615 ) ÷ 615] x 100 = -42.28%
Formula
Percentage change = [(355 - 615) / 615] x 100
Subtract the new number by the original number
355 - 615 = -260
-260 ÷ 615 = -0.42276422764227645
-0.42276422764227645 x 100 = -42.28%