42.5% is the change from 200 to 285
Calculation steps:
[( 285 - 200 ) ÷ 200] x 100 = 42.5%
Formula
Percentage change = [(285 - 200) / 200] x 100
Subtract the new number by the original number
285 - 200 = 85
85 ÷ 200 = 0.425
0.425 x 100 = 42.5%
Example