-32.35% is the change from 578 to 391
Calculation steps:
[( 391 - 578 ) ÷ 578] x 100 = -32.35%
Formula
Percentage change = [(391 - 578) / 578] x 100
Subtract the new number by the original number
391 - 578 = -187
-187 ÷ 578 = -0.3235294117647059
-0.3235294117647059 x 100 = -32.35%