-90.15% is the change from 609 to 60
Calculation steps:
[( 60 - 609 ) ÷ 609] x 100 = -90.15%
Formula
Percentage change = [(60 - 609) / 609] x 100
Subtract the new number by the original number
60 - 609 = -549
-549 ÷ 609 = -0.9014778325123153
-0.9014778325123153 x 100 = -90.15%