-97.84% is the change from 833 to 18
Calculation steps:
[( 18 - 833 ) ÷ 833] x 100 = -97.84%
Formula
Percentage change = [(18 - 833) / 833] x 100
Subtract the new number by the original number
18 - 833 = -815
-815 ÷ 833 = -0.978391356542617
-0.978391356542617 x 100 = -97.84%