-31.76% is the change from 913 to 623
Calculation steps:
[( 623 - 913 ) ÷ 913] x 100 = -31.76%
Formula
Percentage change = [(623 - 913) / 913] x 100
Subtract the new number by the original number
623 - 913 = -290
-290 ÷ 913 = -0.3176341730558598
-0.3176341730558598 x 100 = -31.76%