71.08% is the change from 166 to 284
Calculation steps:
[( 284 - 166 ) ÷ 166] x 100 = 71.08%
Formula
Percentage change = [(284 - 166) / 166] x 100
Subtract the new number by the original number
284 - 166 = 118
118 ÷ 166 = 0.7108433734939759
0.7108433734939759 x 100 = 71.08%