78.33% is the change from 503 to 897
Calculation steps:
[( 897 - 503 ) ÷ 503] x 100 = 78.33%
Formula
Percentage change = [(897 - 503) / 503] x 100
Subtract the new number by the original number
897 - 503 = 394
394 ÷ 503 = 0.7833001988071571
0.7833001988071571 x 100 = 78.33%