-92.13% is the change from 343 to 27
Calculation steps:
[( 27 - 343 ) ÷ 343] x 100 = -92.13%
Formula
Percentage change = [(27 - 343) / 343] x 100
Subtract the new number by the original number
27 - 343 = -316
-316 ÷ 343 = -0.9212827988338192
-0.9212827988338192 x 100 = -92.13%