-30.77% is the change from 897 to 621
Calculation steps:
[( 621 - 897 ) ÷ 897] x 100 = -30.77%
Formula
Percentage change = [(621 - 897) / 897] x 100
Subtract the new number by the original number
621 - 897 = -276
-276 ÷ 897 = -0.3076923076923077
-0.3076923076923077 x 100 = -30.77%