-23.85% is the change from 390 to 297
Calculation steps:
[( 297 - 390 ) ÷ 390] x 100 = -23.85%
Formula
Percentage change = [(297 - 390) / 390] x 100
Subtract the new number by the original number
297 - 390 = -93
-93 ÷ 390 = -0.23846153846153847
-0.23846153846153847 x 100 = -23.85%