55.27% is the change from 503 to 781
Calculation steps:
[( 781 - 503 ) ÷ 503] x 100 = 55.27%
Formula
Percentage change = [(781 - 503) / 503] x 100
Subtract the new number by the original number
781 - 503 = 278
278 ÷ 503 = 0.5526838966202783
0.5526838966202783 x 100 = 55.27%