-2.23% is the change from 897 to 877
Calculation steps:
[( 877 - 897 ) ÷ 897] x 100 = -2.23%
Formula
Percentage change = [(877 - 897) / 897] x 100
Subtract the new number by the original number
877 - 897 = -20
-20 ÷ 897 = -0.022296544035674472
-0.022296544035674472 x 100 = -2.23%