293.94% is the change from 66 to 260
Calculation steps:
[( 260 - 66 ) ÷ 66] x 100 = 293.94%
Formula
Percentage change = [(260 - 66) / 66] x 100
Subtract the new number by the original number
260 - 66 = 194
194 ÷ 66 = 2.9393939393939394
2.9393939393939394 x 100 = 293.94%