78.7% is the change from 277 to 495
Calculation steps:
[( 495 - 277 ) ÷ 277] x 100 = 78.7%
Formula
Percentage change = [(495 - 277) / 277] x 100
Subtract the new number by the original number
495 - 277 = 218
218 ÷ 277 = 0.7870036101083032
0.7870036101083032 x 100 = 78.7%