-97.08% is the change from 343 to 10
Calculation steps:
[( 10 - 343 ) ÷ 343] x 100 = -97.08%
Formula
Percentage change = [(10 - 343) / 343] x 100
Subtract the new number by the original number
10 - 343 = -333
-333 ÷ 343 = -0.9708454810495627
-0.9708454810495627 x 100 = -97.08%