-58.5% is the change from 200 to 83
Calculation steps:
[( 83 - 200 ) ÷ 200] x 100 = -58.5%
Formula
Percentage change = [(83 - 200) / 200] x 100
Subtract the new number by the original number
83 - 200 = -117
-117 ÷ 200 = -0.585
-0.585 x 100 = -58.5%
Example