-88.13% is the change from 615 to 73
Calculation steps:
[( 73 - 615 ) ÷ 615] x 100 = -88.13%
Formula
Percentage change = [(73 - 615) / 615] x 100
Subtract the new number by the original number
73 - 615 = -542
-542 ÷ 615 = -0.8813008130081301
-0.8813008130081301 x 100 = -88.13%