-81.48% is the change from 621 to 115
Calculation steps:
[( 115 - 621 ) ÷ 621] x 100 = -81.48%
Formula
Percentage change = [(115 - 621) / 621] x 100
Subtract the new number by the original number
115 - 621 = -506
-506 ÷ 621 = -0.8148148148148148
-0.8148148148148148 x 100 = -81.48%