-19.77% is the change from 870 to 698
Calculation steps:
[( 698 - 870 ) ÷ 870] x 100 = -19.77%
Formula
Percentage change = [(698 - 870) / 870] x 100
Subtract the new number by the original number
698 - 870 = -172
-172 ÷ 870 = -0.19770114942528735
-0.19770114942528735 x 100 = -19.77%