-24.44% is the change from 900 to 680
Calculation steps:
[( 680 - 900 ) ÷ 900] x 100 = -24.44%
Formula
Percentage change = [(680 - 900) / 900] x 100
Subtract the new number by the original number
680 - 900 = -220
-220 ÷ 900 = -0.24444444444444444
-0.24444444444444444 x 100 = -24.44%