243.37% is the change from 83 to 285
Calculation steps:
[( 285 - 83 ) ÷ 83] x 100 = 243.37%
Formula
Percentage change = [(285 - 83) / 83] x 100
Subtract the new number by the original number
285 - 83 = 202
202 ÷ 83 = 2.433734939759036
2.433734939759036 x 100 = 243.37%