-23.56% is the change from 900 to 688
Calculation steps:
[( 688 - 900 ) ÷ 900] x 100 = -23.56%
Formula
Percentage change = [(688 - 900) / 900] x 100
Subtract the new number by the original number
688 - 900 = -212
-212 ÷ 900 = -0.23555555555555555
-0.23555555555555555 x 100 = -23.56%