61.51% is the change from 304 to 491
Calculation steps:
[( 491 - 304 ) ÷ 304] x 100 = 61.51%
Formula
Percentage change = [(491 - 304) / 304] x 100
Subtract the new number by the original number
491 - 304 = 187
187 ÷ 304 = 0.6151315789473685
0.6151315789473685 x 100 = 61.51%