-63.27% is the change from 343 to 126
Calculation steps:
[( 126 - 343 ) ÷ 343] x 100 = -63.27%
Formula
Percentage change = [(126 - 343) / 343] x 100
Subtract the new number by the original number
126 - 343 = -217
-217 ÷ 343 = -0.6326530612244898
-0.6326530612244898 x 100 = -63.27%