-72.39% is the change from 641 to 177
Calculation steps:
[( 177 - 641 ) ÷ 641] x 100 = -72.39%
Formula
Percentage change = [(177 - 641) / 641] x 100
Subtract the new number by the original number
177 - 641 = -464
-464 ÷ 641 = -0.7238689547581904
-0.7238689547581904 x 100 = -72.39%