134.94% is the change from 166 to 390
Calculation steps:
[( 390 - 166 ) ÷ 166] x 100 = 134.94%
Formula
Percentage change = [(390 - 166) / 166] x 100
Subtract the new number by the original number
390 - 166 = 224
224 ÷ 166 = 1.3493975903614457
1.3493975903614457 x 100 = 134.94%