-83.09% is the change from 609 to 103
Calculation steps:
[( 103 - 609 ) ÷ 609] x 100 = -83.09%
Formula
Percentage change = [(103 - 609) / 609] x 100
Subtract the new number by the original number
103 - 609 = -506
-506 ÷ 609 = -0.8308702791461412
-0.8308702791461412 x 100 = -83.09%