171.43% is the change from 105 to 285
Calculation steps:
[( 285 - 105 ) ÷ 105] x 100 = 171.43%
Formula
Percentage change = [(285 - 105) / 105] x 100
Subtract the new number by the original number
285 - 105 = 180
180 ÷ 105 = 1.7142857142857142
1.7142857142857142 x 100 = 171.43%