-18.17% is the change from 644 to 527
Calculation steps:
[( 527 - 644 ) ÷ 644] x 100 = -18.17%
Formula
Percentage change = [(527 - 644) / 644] x 100
Subtract the new number by the original number
527 - 644 = -117
-117 ÷ 644 = -0.18167701863354038
-0.18167701863354038 x 100 = -18.17%