53.92% is the change from 319 to 491
Calculation steps:
[( 491 - 319 ) ÷ 319] x 100 = 53.92%
Formula
Percentage change = [(491 - 319) / 319] x 100
Subtract the new number by the original number
491 - 319 = 172
172 ÷ 319 = 0.5391849529780565
0.5391849529780565 x 100 = 53.92%