-93% is the change from 900 to 63
Calculation steps:
[( 63 - 900 ) ÷ 900] x 100 = -93%
Formula
Percentage change = [(63 - 900) / 900] x 100
Subtract the new number by the original number
63 - 900 = -837
-837 ÷ 900 = -0.93
-0.93 x 100 = -93%
Example