-80.72% is the change from 83 to 16
Calculation steps:
[( 16 - 83 ) ÷ 83] x 100 = -80.72%
Formula
Percentage change = [(16 - 83) / 83] x 100
Subtract the new number by the original number
16 - 83 = -67
-67 ÷ 83 = -0.8072289156626506
-0.8072289156626506 x 100 = -80.72%