99.55% is the change from 440 to 878
Calculation steps:
[( 878 - 440 ) ÷ 440] x 100 = 99.55%
Formula
Percentage change = [(878 - 440) / 440] x 100
Subtract the new number by the original number
878 - 440 = 438
438 ÷ 440 = 0.9954545454545455
0.9954545454545455 x 100 = 99.55%