345.45% is the change from 66 to 294
Calculation steps:
[( 294 - 66 ) ÷ 66] x 100 = 345.45%
Formula
Percentage change = [(294 - 66) / 66] x 100
Subtract the new number by the original number
294 - 66 = 228
228 ÷ 66 = 3.4545454545454546
3.4545454545454546 x 100 = 345.45%