-94.2% is the change from 810 to 47
Calculation steps:
[( 47 - 810 ) ÷ 810] x 100 = -94.2%
Formula
Percentage change = [(47 - 810) / 810] x 100
Subtract the new number by the original number
47 - 810 = -763
-763 ÷ 810 = -0.9419753086419753
-0.9419753086419753 x 100 = -94.2%