87.14% is the change from 311 to 582
Calculation steps:
[( 582 - 311 ) ÷ 311] x 100 = 87.14%
Formula
Percentage change = [(582 - 311) / 311] x 100
Subtract the new number by the original number
582 - 311 = 271
271 ÷ 311 = 0.8713826366559485
0.8713826366559485 x 100 = 87.14%