-80.13% is the change from 609 to 121
Calculation steps:
[( 121 - 609 ) ÷ 609] x 100 = -80.13%
Formula
Percentage change = [(121 - 609) / 609] x 100
Subtract the new number by the original number
121 - 609 = -488
-488 ÷ 609 = -0.8013136288998358
-0.8013136288998358 x 100 = -80.13%