31.07% is the change from 206 to 270
Calculation steps:
[( 270 - 206 ) ÷ 206] x 100 = 31.07%
Formula
Percentage change = [(270 - 206) / 206] x 100
Subtract the new number by the original number
270 - 206 = 64
64 ÷ 206 = 0.3106796116504854
0.3106796116504854 x 100 = 31.07%