-46.29% is the change from 391 to 210
Calculation steps:
[( 210 - 391 ) ÷ 391] x 100 = -46.29%
Formula
Percentage change = [(210 - 391) / 391] x 100
Subtract the new number by the original number
210 - 391 = -181
-181 ÷ 391 = -0.4629156010230179
-0.4629156010230179 x 100 = -46.29%