269.05% is the change from 84 to 310
Calculation steps:
[( 310 - 84 ) ÷ 84] x 100 = 269.05%
Formula
Percentage change = [(310 - 84) / 84] x 100
Subtract the new number by the original number
310 - 84 = 226
226 ÷ 84 = 2.6904761904761907
2.6904761904761907 x 100 = 269.05%