34.85% is the change from 660 to 890
Calculation steps:
[( 890 - 660 ) ÷ 660] x 100 = 34.85%
Formula
Percentage change = [(890 - 660) / 660] x 100
Subtract the new number by the original number
890 - 660 = 230
230 ÷ 660 = 0.3484848484848485
0.3484848484848485 x 100 = 34.85%