-37.52% is the change from 501 to 313
Calculation steps:
[( 313 - 501 ) ÷ 501] x 100 = -37.52%
Formula
Percentage change = [(313 - 501) / 501] x 100
Subtract the new number by the original number
313 - 501 = -188
-188 ÷ 501 = -0.37524950099800397
-0.37524950099800397 x 100 = -37.52%