-66.84% is the change from 778 to 258
Calculation steps:
[( 258 - 778 ) ÷ 778] x 100 = -66.84%
Formula
Percentage change = [(258 - 778) / 778] x 100
Subtract the new number by the original number
258 - 778 = -520
-520 ÷ 778 = -0.6683804627249358
-0.6683804627249358 x 100 = -66.84%