255.29% is the change from 85 to 302
Calculation steps:
[( 302 - 85 ) ÷ 85] x 100 = 255.29%
Formula
Percentage change = [(302 - 85) / 85] x 100
Subtract the new number by the original number
302 - 85 = 217
217 ÷ 85 = 2.552941176470588
2.552941176470588 x 100 = 255.29%