55.25% is the change from 324 to 503
Calculation steps:
[( 503 - 324 ) ÷ 324] x 100 = 55.25%
Formula
Percentage change = [(503 - 324) / 324] x 100
Subtract the new number by the original number
503 - 324 = 179
179 ÷ 324 = 0.5524691358024691
0.5524691358024691 x 100 = 55.25%