138.35% is the change from 206 to 491
Calculation steps:
[( 491 - 206 ) ÷ 206] x 100 = 138.35%
Formula
Percentage change = [(491 - 206) / 206] x 100
Subtract the new number by the original number
491 - 206 = 285
285 ÷ 206 = 1.383495145631068
1.383495145631068 x 100 = 138.35%