-2.58% is the change from 893 to 870
Calculation steps:
[( 870 - 893 ) ÷ 893] x 100 = -2.58%
Formula
Percentage change = [(870 - 893) / 893] x 100
Subtract the new number by the original number
870 - 893 = -23
-23 ÷ 893 = -0.025755879059350503
-0.025755879059350503 x 100 = -2.58%