-27.32% is the change from 615 to 447
Calculation steps:
[( 447 - 615 ) ÷ 615] x 100 = -27.32%
Formula
Percentage change = [(447 - 615) / 615] x 100
Subtract the new number by the original number
447 - 615 = -168
-168 ÷ 615 = -0.2731707317073171
-0.2731707317073171 x 100 = -27.32%