50% is the change from 602 to 903
Calculation steps:
[( 903 - 602 ) ÷ 602] x 100 = 50%
Formula
Percentage change = [(903 - 602) / 602] x 100
Subtract the new number by the original number
903 - 602 = 301
301 ÷ 602 = 0.5
0.5 x 100 = 50%
Example