-86.38% is the change from 345 to 47
Calculation steps:
[( 47 - 345 ) ÷ 345] x 100 = -86.38%
Formula
Percentage change = [(47 - 345) / 345] x 100
Subtract the new number by the original number
47 - 345 = -298
-298 ÷ 345 = -0.863768115942029
-0.863768115942029 x 100 = -86.38%