-80.49% is the change from 82 to 16
Calculation steps:
[( 16 - 82 ) ÷ 82] x 100 = -80.49%
Formula
Percentage change = [(16 - 82) / 82] x 100
Subtract the new number by the original number
16 - 82 = -66
-66 ÷ 82 = -0.8048780487804879
-0.8048780487804879 x 100 = -80.49%