-61.8% is the change from 890 to 340
Calculation steps:
[( 340 - 890 ) ÷ 890] x 100 = -61.8%
Formula
Percentage change = [(340 - 890) / 890] x 100
Subtract the new number by the original number
340 - 890 = -550
-550 ÷ 890 = -0.6179775280898876
-0.6179775280898876 x 100 = -61.8%