-70.62% is the change from 878 to 258
Calculation steps:
[( 258 - 878 ) ÷ 878] x 100 = -70.62%
Formula
Percentage change = [(258 - 878) / 878] x 100
Subtract the new number by the original number
258 - 878 = -620
-620 ÷ 878 = -0.7061503416856492
-0.7061503416856492 x 100 = -70.62%