-81.98% is the change from 677 to 122
Calculation steps:
[( 122 - 677 ) ÷ 677] x 100 = -81.98%
Formula
Percentage change = [(122 - 677) / 677] x 100
Subtract the new number by the original number
122 - 677 = -555
-555 ÷ 677 = -0.8197932053175776
-0.8197932053175776 x 100 = -81.98%