78.73% is the change from 503 to 899
Calculation steps:
[( 899 - 503 ) ÷ 503] x 100 = 78.73%
Formula
Percentage change = [(899 - 503) / 503] x 100
Subtract the new number by the original number
899 - 503 = 396
396 ÷ 503 = 0.7872763419483101
0.7872763419483101 x 100 = 78.73%