-94.47% is the change from 850 to 47
Calculation steps:
[( 47 - 850 ) ÷ 850] x 100 = -94.47%
Formula
Percentage change = [(47 - 850) / 850] x 100
Subtract the new number by the original number
47 - 850 = -803
-803 ÷ 850 = -0.9447058823529412
-0.9447058823529412 x 100 = -94.47%