57.53% is the change from 591 to 931
Calculation steps:
[( 931 - 591 ) ÷ 591] x 100 = 57.53%
Formula
Percentage change = [(931 - 591) / 591] x 100
Subtract the new number by the original number
931 - 591 = 340
340 ÷ 591 = 0.5752961082910322
0.5752961082910322 x 100 = 57.53%