-18.62% is the change from 650 to 529
Calculation steps:
[( 529 - 650 ) ÷ 650] x 100 = -18.62%
Formula
Percentage change = [(529 - 650) / 650] x 100
Subtract the new number by the original number
529 - 650 = -121
-121 ÷ 650 = -0.18615384615384614
-0.18615384615384614 x 100 = -18.62%