-5.55% is the change from 901 to 851
Calculation steps:
[( 851 - 901 ) ÷ 901] x 100 = -5.55%
Formula
Percentage change = [(851 - 901) / 901] x 100
Subtract the new number by the original number
851 - 901 = -50
-50 ÷ 901 = -0.05549389567147614
-0.05549389567147614 x 100 = -5.55%