78.55% is the change from 331 to 591
Calculation steps:
[( 591 - 331 ) ÷ 331] x 100 = 78.55%
Formula
Percentage change = [(591 - 331) / 331] x 100
Subtract the new number by the original number
591 - 331 = 260
260 ÷ 331 = 0.7854984894259819
0.7854984894259819 x 100 = 78.55%