-80.76% is the change from 634 to 122
Calculation steps:
[( 122 - 634 ) ÷ 634] x 100 = -80.76%
Formula
Percentage change = [(122 - 634) / 634] x 100
Subtract the new number by the original number
122 - 634 = -512
-512 ÷ 634 = -0.807570977917981
-0.807570977917981 x 100 = -80.76%