70.79% is the change from 291 to 497
Calculation steps:
[( 497 - 291 ) ÷ 291] x 100 = 70.79%
Formula
Percentage change = [(497 - 291) / 291] x 100
Subtract the new number by the original number
497 - 291 = 206
206 ÷ 291 = 0.7079037800687286
0.7079037800687286 x 100 = 70.79%