77.98% is the change from 277 to 493
Calculation steps:
[( 493 - 277 ) ÷ 277] x 100 = 77.98%
Formula
Percentage change = [(493 - 277) / 277] x 100
Subtract the new number by the original number
493 - 277 = 216
216 ÷ 277 = 0.779783393501805
0.779783393501805 x 100 = 77.98%