-27.93% is the change from 641 to 462
Calculation steps:
[( 462 - 641 ) ÷ 641] x 100 = -27.93%
Formula
Percentage change = [(462 - 641) / 641] x 100
Subtract the new number by the original number
462 - 641 = -179
-179 ÷ 641 = -0.2792511700468019
-0.2792511700468019 x 100 = -27.93%