921.21% is the change from 66 to 674
Calculation steps:
[( 674 - 66 ) ÷ 66] x 100 = 921.21%
Formula
Percentage change = [(674 - 66) / 66] x 100
Subtract the new number by the original number
674 - 66 = 608
608 ÷ 66 = 9.212121212121213
9.212121212121213 x 100 = 921.21%