-21.79% is the change from 615 to 481
Calculation steps:
[( 481 - 615 ) ÷ 615] x 100 = -21.79%
Formula
Percentage change = [(481 - 615) / 615] x 100
Subtract the new number by the original number
481 - 615 = -134
-134 ÷ 615 = -0.21788617886178863
-0.21788617886178863 x 100 = -21.79%