-20.5% is the change from 317 to 252
Calculation steps:
[( 252 - 317 ) ÷ 317] x 100 = -20.5%
Formula
Percentage change = [(252 - 317) / 317] x 100
Subtract the new number by the original number
252 - 317 = -65
-65 ÷ 317 = -0.20504731861198738
-0.20504731861198738 x 100 = -20.5%