-73.85% is the change from 390 to 102
Calculation steps:
[( 102 - 390 ) ÷ 390] x 100 = -73.85%
Formula
Percentage change = [(102 - 390) / 390] x 100
Subtract the new number by the original number
102 - 390 = -288
-288 ÷ 390 = -0.7384615384615385
-0.7384615384615385 x 100 = -73.85%