-70.3% is the change from 936 to 278
Calculation steps:
[( 278 - 936 ) ÷ 936] x 100 = -70.3%
Formula
Percentage change = [(278 - 936) / 936] x 100
Subtract the new number by the original number
278 - 936 = -658
-658 ÷ 936 = -0.7029914529914529
-0.7029914529914529 x 100 = -70.3%