-70% is the change from 930 to 279
Calculation steps:
[( 279 - 930 ) ÷ 930] x 100 = -70%
Formula
Percentage change = [(279 - 930) / 930] x 100
Subtract the new number by the original number
279 - 930 = -651
-651 ÷ 930 = -0.7
-0.7 x 100 = -70%
Example