-17.86% is the change from 644 to 529
Calculation steps:
[( 529 - 644 ) ÷ 644] x 100 = -17.86%
Formula
Percentage change = [(529 - 644) / 644] x 100
Subtract the new number by the original number
529 - 644 = -115
-115 ÷ 644 = -0.17857142857142858
-0.17857142857142858 x 100 = -17.86%