295.24% is the change from 42 to 166
Calculation steps:
[( 166 - 42 ) ÷ 42] x 100 = 295.24%
Formula
Percentage change = [(166 - 42) / 42] x 100
Subtract the new number by the original number
166 - 42 = 124
124 ÷ 42 = 2.9523809523809526
2.9523809523809526 x 100 = 295.24%