-21.45% is the change from 830 to 652
Calculation steps:
[( 652 - 830 ) ÷ 830] x 100 = -21.45%
Formula
Percentage change = [(652 - 830) / 830] x 100
Subtract the new number by the original number
652 - 830 = -178
-178 ÷ 830 = -0.21445783132530122
-0.21445783132530122 x 100 = -21.45%