1283.33% is the change from 12 to 166
Calculation steps:
[( 166 - 12 ) ÷ 12] x 100 = 1283.33%
Formula
Percentage change = [(166 - 12) / 12] x 100
Subtract the new number by the original number
166 - 12 = 154
154 ÷ 12 = 12.833333333333334
12.833333333333334 x 100 = 1283.33%