20.69% is the change from 377 to 455
Calculation steps:
[( 455 - 377 ) ÷ 377] x 100 = 20.69%
Formula
Percentage change = [(455 - 377) / 377] x 100
Subtract the new number by the original number
455 - 377 = 78
78 ÷ 377 = 0.20689655172413793
0.20689655172413793 x 100 = 20.69%