-94.28% is the change from 891 to 51
Calculation steps:
[( 51 - 891 ) ÷ 891] x 100 = -94.28%
Formula
Percentage change = [(51 - 891) / 891] x 100
Subtract the new number by the original number
51 - 891 = -840
-840 ÷ 891 = -0.9427609427609428
-0.9427609427609428 x 100 = -94.28%