34.85% is the change from 66 to 89
Calculation steps:
[( 89 - 66 ) ÷ 66] x 100 = 34.85%
Formula
Percentage change = [(89 - 66) / 66] x 100
Subtract the new number by the original number
89 - 66 = 23
23 ÷ 66 = 0.3484848484848485
0.3484848484848485 x 100 = 34.85%