-51.66% is the change from 391 to 189
Calculation steps:
[( 189 - 391 ) ÷ 391] x 100 = -51.66%
Formula
Percentage change = [(189 - 391) / 391] x 100
Subtract the new number by the original number
189 - 391 = -202
-202 ÷ 391 = -0.5166240409207161
-0.5166240409207161 x 100 = -51.66%