-1.95% is the change from 870 to 853
Calculation steps:
[( 853 - 870 ) ÷ 870] x 100 = -1.95%
Formula
Percentage change = [(853 - 870) / 870] x 100
Subtract the new number by the original number
853 - 870 = -17
-17 ÷ 870 = -0.01954022988505747
-0.01954022988505747 x 100 = -1.95%