212.12% is the change from 66 to 206
Calculation steps:
[( 206 - 66 ) ÷ 66] x 100 = 212.12%
Formula
Percentage change = [(206 - 66) / 66] x 100
Subtract the new number by the original number
206 - 66 = 140
140 ÷ 66 = 2.121212121212121
2.121212121212121 x 100 = 212.12%