-13.39% is the change from 717 to 621
Calculation steps:
[( 621 - 717 ) ÷ 717] x 100 = -13.39%
Formula
Percentage change = [(621 - 717) / 717] x 100
Subtract the new number by the original number
621 - 717 = -96
-96 ÷ 717 = -0.13389121338912133
-0.13389121338912133 x 100 = -13.39%