-80.63% is the change from 630 to 122
Calculation steps:
[( 122 - 630 ) ÷ 630] x 100 = -80.63%
Formula
Percentage change = [(122 - 630) / 630] x 100
Subtract the new number by the original number
122 - 630 = -508
-508 ÷ 630 = -0.8063492063492064
-0.8063492063492064 x 100 = -80.63%