71.09% is the change from 294 to 503
Calculation steps:
[( 503 - 294 ) ÷ 294] x 100 = 71.09%
Formula
Percentage change = [(503 - 294) / 294] x 100
Subtract the new number by the original number
503 - 294 = 209
209 ÷ 294 = 0.7108843537414966
0.7108843537414966 x 100 = 71.09%