-17.47% is the change from 641 to 529
Calculation steps:
[( 529 - 641 ) ÷ 641] x 100 = -17.47%
Formula
Percentage change = [(529 - 641) / 641] x 100
Subtract the new number by the original number
529 - 641 = -112
-112 ÷ 641 = -0.1747269890795632
-0.1747269890795632 x 100 = -17.47%