-81.71% is the change from 667 to 122
Calculation steps:
[( 122 - 667 ) ÷ 667] x 100 = -81.71%
Formula
Percentage change = [(122 - 667) / 667] x 100
Subtract the new number by the original number
122 - 667 = -545
-545 ÷ 667 = -0.8170914542728636
-0.8170914542728636 x 100 = -81.71%