261.87% is the change from 139 to 503
Calculation steps:
[( 503 - 139 ) ÷ 139] x 100 = 261.87%
Formula
Percentage change = [(503 - 139) / 139] x 100
Subtract the new number by the original number
503 - 139 = 364
364 ÷ 139 = 2.618705035971223
2.618705035971223 x 100 = 261.87%