-47.06% is the change from 391 to 207
Calculation steps:
[( 207 - 391 ) ÷ 391] x 100 = -47.06%
Formula
Percentage change = [(207 - 391) / 391] x 100
Subtract the new number by the original number
207 - 391 = -184
-184 ÷ 391 = -0.47058823529411764
-0.47058823529411764 x 100 = -47.06%