83.74% is the change from 455 to 836
Calculation steps:
[( 836 - 455 ) ÷ 455] x 100 = 83.74%
Formula
Percentage change = [(836 - 455) / 455] x 100
Subtract the new number by the original number
836 - 455 = 381
381 ÷ 455 = 0.8373626373626374
0.8373626373626374 x 100 = 83.74%