-94.88% is the change from 840 to 43
Calculation steps:
[( 43 - 840 ) ÷ 840] x 100 = -94.88%
Formula
Percentage change = [(43 - 840) / 840] x 100
Subtract the new number by the original number
43 - 840 = -797
-797 ÷ 840 = -0.9488095238095238
-0.9488095238095238 x 100 = -94.88%