-30.23% is the change from 913 to 637
Calculation steps:
[( 637 - 913 ) ÷ 913] x 100 = -30.23%
Formula
Percentage change = [(637 - 913) / 913] x 100
Subtract the new number by the original number
637 - 913 = -276
-276 ÷ 913 = -0.3023001095290252
-0.3023001095290252 x 100 = -30.23%