-82.42% is the change from 91 to 16
Calculation steps:
[( 16 - 91 ) ÷ 91] x 100 = -82.42%
Formula
Percentage change = [(16 - 91) / 91] x 100
Subtract the new number by the original number
16 - 91 = -75
-75 ÷ 91 = -0.8241758241758241
-0.8241758241758241 x 100 = -82.42%