-77.92% is the change from 394 to 87
Calculation steps:
[( 87 - 394 ) ÷ 394] x 100 = -77.92%
Formula
Percentage change = [(87 - 394) / 394] x 100
Subtract the new number by the original number
87 - 394 = -307
-307 ÷ 394 = -0.7791878172588832
-0.7791878172588832 x 100 = -77.92%