554.46% is the change from 101 to 661
Calculation steps:
[( 661 - 101 ) ÷ 101] x 100 = 554.46%
Formula
Percentage change = [(661 - 101) / 101] x 100
Subtract the new number by the original number
661 - 101 = 560
560 ÷ 101 = 5.544554455445544
5.544554455445544 x 100 = 554.46%