1339.39% is the change from 66 to 950
Calculation steps:
[( 950 - 66 ) ÷ 66] x 100 = 1339.39%
Formula
Percentage change = [(950 - 66) / 66] x 100
Subtract the new number by the original number
950 - 66 = 884
884 ÷ 66 = 13.393939393939394
13.393939393939394 x 100 = 1339.39%