5408.33% is the change from 12 to 661
Calculation steps:
[( 661 - 12 ) ÷ 12] x 100 = 5408.33%
Formula
Percentage change = [(661 - 12) / 12] x 100
Subtract the new number by the original number
661 - 12 = 649
649 ÷ 12 = 54.083333333333336
54.083333333333336 x 100 = 5408.33%