283.21% is the change from 131 to 502
Calculation steps:
[( 502 - 131 ) ÷ 131] x 100 = 283.21%
Formula
Percentage change = [(502 - 131) / 131] x 100
Subtract the new number by the original number
502 - 131 = 371
371 ÷ 131 = 2.83206106870229
2.83206106870229 x 100 = 283.21%