-60% is the change from 900 to 360
Calculation steps:
[( 360 - 900 ) ÷ 900] x 100 = -60%
Formula
Percentage change = [(360 - 900) / 900] x 100
Subtract the new number by the original number
360 - 900 = -540
-540 ÷ 900 = -0.6
-0.6 x 100 = -60%
Example