-81.4% is the change from 656 to 122
Calculation steps:
[( 122 - 656 ) ÷ 656] x 100 = -81.4%
Formula
Percentage change = [(122 - 656) / 656] x 100
Subtract the new number by the original number
122 - 656 = -534
-534 ÷ 656 = -0.8140243902439024
-0.8140243902439024 x 100 = -81.4%