-18.77% is the change from 650 to 528
Calculation steps:
[( 528 - 650 ) ÷ 650] x 100 = -18.77%
Formula
Percentage change = [(528 - 650) / 650] x 100
Subtract the new number by the original number
528 - 650 = -122
-122 ÷ 650 = -0.18769230769230769
-0.18769230769230769 x 100 = -18.77%
Example