-91.05% is the change from 816 to 73
Calculation steps:
[( 73 - 816 ) ÷ 816] x 100 = -91.05%
Formula
Percentage change = [(73 - 816) / 816] x 100
Subtract the new number by the original number
73 - 816 = -743
-743 ÷ 816 = -0.9105392156862745
-0.9105392156862745 x 100 = -91.05%