-81.9% is the change from 536 to 97
Calculation steps:
[( 97 - 536 ) ÷ 536] x 100 = -81.9%
Formula
Percentage change = [(97 - 536) / 536] x 100
Subtract the new number by the original number
97 - 536 = -439
-439 ÷ 536 = -0.8190298507462687
-0.8190298507462687 x 100 = -81.9%