-90.38% is the change from 343 to 33
Calculation steps:
[( 33 - 343 ) ÷ 343] x 100 = -90.38%
Formula
Percentage change = [(33 - 343) / 343] x 100
Subtract the new number by the original number
33 - 343 = -310
-310 ÷ 343 = -0.9037900874635568
-0.9037900874635568 x 100 = -90.38%