-83.5% is the change from 200 to 33
Calculation steps:
[( 33 - 200 ) ÷ 200] x 100 = -83.5%
Formula
Percentage change = [(33 - 200) / 200] x 100
Subtract the new number by the original number
33 - 200 = -167
-167 ÷ 200 = -0.835
-0.835 x 100 = -83.5%
Example