-46.92% is the change from 390 to 207
Calculation steps:
[( 207 - 390 ) ÷ 390] x 100 = -46.92%
Formula
Percentage change = [(207 - 390) / 390] x 100
Subtract the new number by the original number
207 - 390 = -183
-183 ÷ 390 = -0.46923076923076923
-0.46923076923076923 x 100 = -46.92%