-16.54% is the change from 641 to 535
Calculation steps:
[( 535 - 641 ) ÷ 641] x 100 = -16.54%
Formula
Percentage change = [(535 - 641) / 641] x 100
Subtract the new number by the original number
535 - 641 = -106
-106 ÷ 641 = -0.16536661466458658
-0.16536661466458658 x 100 = -16.54%