74.55% is the change from 503 to 878
Calculation steps:
[( 878 - 503 ) ÷ 503] x 100 = 74.55%
Formula
Percentage change = [(878 - 503) / 503] x 100
Subtract the new number by the original number
878 - 503 = 375
375 ÷ 503 = 0.7455268389662028
0.7455268389662028 x 100 = 74.55%