-76.15% is the change from 390 to 93
Calculation steps:
[( 93 - 390 ) ÷ 390] x 100 = -76.15%
Formula
Percentage change = [(93 - 390) / 390] x 100
Subtract the new number by the original number
93 - 390 = -297
-297 ÷ 390 = -0.7615384615384615
-0.7615384615384615 x 100 = -76.15%