234.12% is the change from 85 to 284
Calculation steps:
[( 284 - 85 ) ÷ 85] x 100 = 234.12%
Formula
Percentage change = [(284 - 85) / 85] x 100
Subtract the new number by the original number
284 - 85 = 199
199 ÷ 85 = 2.3411764705882354
2.3411764705882354 x 100 = 234.12%