-36.25% is the change from 538 to 343
Calculation steps:
[( 343 - 538 ) ÷ 538] x 100 = -36.25%
Formula
Percentage change = [(343 - 538) / 538] x 100
Subtract the new number by the original number
343 - 538 = -195
-195 ÷ 538 = -0.362453531598513
-0.362453531598513 x 100 = -36.25%