-70.14% is the change from 931 to 278
Calculation steps:
[( 278 - 931 ) ÷ 931] x 100 = -70.14%
Formula
Percentage change = [(278 - 931) / 931] x 100
Subtract the new number by the original number
278 - 931 = -653
-653 ÷ 931 = -0.7013963480128894
-0.7013963480128894 x 100 = -70.14%