-79.9% is the change from 607 to 122
Calculation steps:
[( 122 - 607 ) ÷ 607] x 100 = -79.9%
Formula
Percentage change = [(122 - 607) / 607] x 100
Subtract the new number by the original number
122 - 607 = -485
-485 ÷ 607 = -0.7990115321252059
-0.7990115321252059 x 100 = -79.9%