-77.59% is the change from 348 to 78
Calculation steps:
[( 78 - 348 ) ÷ 348] x 100 = -77.59%
Formula
Percentage change = [(78 - 348) / 348] x 100
Subtract the new number by the original number
78 - 348 = -270
-270 ÷ 348 = -0.7758620689655172
-0.7758620689655172 x 100 = -77.59%