-85.5% is the change from 200 to 29
Calculation steps:
[( 29 - 200 ) ÷ 200] x 100 = -85.5%
Formula
Percentage change = [(29 - 200) / 200] x 100
Subtract the new number by the original number
29 - 200 = -171
-171 ÷ 200 = -0.855
-0.855 x 100 = -85.5%
Example