79.42% is the change from 277 to 497
Calculation steps:
[( 497 - 277 ) ÷ 277] x 100 = 79.42%
Formula
Percentage change = [(497 - 277) / 277] x 100
Subtract the new number by the original number
497 - 277 = 220
220 ÷ 277 = 0.7942238267148014
0.7942238267148014 x 100 = 79.42%