-85.05% is the change from 816 to 122
Calculation steps:
[( 122 - 816 ) ÷ 816] x 100 = -85.05%
Formula
Percentage change = [(122 - 816) / 816] x 100
Subtract the new number by the original number
122 - 816 = -694
-694 ÷ 816 = -0.8504901960784313
-0.8504901960784313 x 100 = -85.05%