1512.2% is the change from 41 to 661
Calculation steps:
[( 661 - 41 ) ÷ 41] x 100 = 1512.2%
Formula
Percentage change = [(661 - 41) / 41] x 100
Subtract the new number by the original number
661 - 41 = 620
620 ÷ 41 = 15.121951219512194
15.121951219512194 x 100 = 1512.2%