-89.53% is the change from 621 to 65
Calculation steps:
[( 65 - 621 ) ÷ 621] x 100 = -89.53%
Formula
Percentage change = [(65 - 621) / 621] x 100
Subtract the new number by the original number
65 - 621 = -556
-556 ÷ 621 = -0.895330112721417
-0.895330112721417 x 100 = -89.53%