66100% is the change from 1 to 662
Calculation steps:
[( 662 - 1 ) ÷ 1] x 100 = 66100%
Formula
Percentage change = [(662 - 1) / 1] x 100
Subtract the new number by the original number
662 - 1 = 661
661 ÷ 1 = 661
661 x 100 = 66100%
Example