120.6% is the change from 398 to 878
Calculation steps:
[( 878 - 398 ) ÷ 398] x 100 = 120.6%
Formula
Percentage change = [(878 - 398) / 398] x 100
Subtract the new number by the original number
878 - 398 = 480
480 ÷ 398 = 1.2060301507537687
1.2060301507537687 x 100 = 120.6%