88.75% is the change from 311 to 587
Calculation steps:
[( 587 - 311 ) ÷ 311] x 100 = 88.75%
Formula
Percentage change = [(587 - 311) / 311] x 100
Subtract the new number by the original number
587 - 311 = 276
276 ÷ 311 = 0.887459807073955
0.887459807073955 x 100 = 88.75%