-92.6% is the change from 851 to 63
Calculation steps:
[( 63 - 851 ) ÷ 851] x 100 = -92.6%
Formula
Percentage change = [(63 - 851) / 851] x 100
Subtract the new number by the original number
63 - 851 = -788
-788 ÷ 851 = -0.9259694477085781
-0.9259694477085781 x 100 = -92.6%