-53.17% is the change from 615 to 288
Calculation steps:
[( 288 - 615 ) ÷ 615] x 100 = -53.17%
Formula
Percentage change = [(288 - 615) / 615] x 100
Subtract the new number by the original number
288 - 615 = -327
-327 ÷ 615 = -0.5317073170731708
-0.5317073170731708 x 100 = -53.17%