37.43% is the change from 366 to 503
Calculation steps:
[( 503 - 366 ) ÷ 366] x 100 = 37.43%
Formula
Percentage change = [(503 - 366) / 366] x 100
Subtract the new number by the original number
503 - 366 = 137
137 ÷ 366 = 0.3743169398907104
0.3743169398907104 x 100 = 37.43%