-69.77% is the change from 258 to 78
Calculation steps:
[( 78 - 258 ) ÷ 258] x 100 = -69.77%
Formula
Percentage change = [(78 - 258) / 258] x 100
Subtract the new number by the original number
78 - 258 = -180
-180 ÷ 258 = -0.6976744186046512
-0.6976744186046512 x 100 = -69.77%