-18.41% is the change from 641 to 523
Calculation steps:
[( 523 - 641 ) ÷ 641] x 100 = -18.41%
Formula
Percentage change = [(523 - 641) / 641] x 100
Subtract the new number by the original number
523 - 641 = -118
-118 ÷ 641 = -0.18408736349453977
-0.18408736349453977 x 100 = -18.41%