-77% is the change from 900 to 207
Calculation steps:
[( 207 - 900 ) ÷ 900] x 100 = -77%
Formula
Percentage change = [(207 - 900) / 900] x 100
Subtract the new number by the original number
207 - 900 = -693
-693 ÷ 900 = -0.77
-0.77 x 100 = -77%
Example