-30.28% is the change from 492 to 343
Calculation steps:
[( 343 - 492 ) ÷ 492] x 100 = -30.28%
Formula
Percentage change = [(343 - 492) / 492] x 100
Subtract the new number by the original number
343 - 492 = -149
-149 ÷ 492 = -0.30284552845528456
-0.30284552845528456 x 100 = -30.28%