-82.47% is the change from 97 to 17
Calculation steps:
[( 17 - 97 ) ÷ 97] x 100 = -82.47%
Formula
Percentage change = [(17 - 97) / 97] x 100
Subtract the new number by the original number
17 - 97 = -80
-80 ÷ 97 = -0.8247422680412371
-0.8247422680412371 x 100 = -82.47%