270.24% is the change from 84 to 311
Calculation steps:
[( 311 - 84 ) ÷ 84] x 100 = 270.24%
Formula
Percentage change = [(311 - 84) / 84] x 100
Subtract the new number by the original number
311 - 84 = 227
227 ÷ 84 = 2.7023809523809526
2.7023809523809526 x 100 = 270.24%