-93.88% is the change from 833 to 51
Calculation steps:
[( 51 - 833 ) ÷ 833] x 100 = -93.88%
Formula
Percentage change = [(51 - 833) / 833] x 100
Subtract the new number by the original number
51 - 833 = -782
-782 ÷ 833 = -0.9387755102040817
-0.9387755102040817 x 100 = -93.88%