87.78% is the change from 311 to 584
Calculation steps:
[( 584 - 311 ) ÷ 311] x 100 = 87.78%
Formula
Percentage change = [(584 - 311) / 311] x 100
Subtract the new number by the original number
584 - 311 = 273
273 ÷ 311 = 0.8778135048231511
0.8778135048231511 x 100 = 87.78%