-36.6% is the change from 541 to 343
Calculation steps:
[( 343 - 541 ) ÷ 541] x 100 = -36.6%
Formula
Percentage change = [(343 - 541) / 541] x 100
Subtract the new number by the original number
343 - 541 = -198
-198 ÷ 541 = -0.3659889094269871
-0.3659889094269871 x 100 = -36.6%