257.14% is the change from 266 to 950
Calculation steps:
[( 950 - 266 ) ÷ 266] x 100 = 257.14%
Formula
Percentage change = [(950 - 266) / 266] x 100
Subtract the new number by the original number
950 - 266 = 684
684 ÷ 266 = 2.5714285714285716
2.5714285714285716 x 100 = 257.14%