-69.24% is the change from 621 to 191
Calculation steps:
[( 191 - 621 ) ÷ 621] x 100 = -69.24%
Formula
Percentage change = [(191 - 621) / 621] x 100
Subtract the new number by the original number
191 - 621 = -430
-430 ÷ 621 = -0.6924315619967794
-0.6924315619967794 x 100 = -69.24%