-20.13% is the change from 313 to 250
Calculation steps:
[( 250 - 313 ) ÷ 313] x 100 = -20.13%
Formula
Percentage change = [(250 - 313) / 313] x 100
Subtract the new number by the original number
250 - 313 = -63
-63 ÷ 313 = -0.2012779552715655
-0.2012779552715655 x 100 = -20.13%