-60.64% is the change from 343 to 135
Calculation steps:
[( 135 - 343 ) ÷ 343] x 100 = -60.64%
Formula
Percentage change = [(135 - 343) / 343] x 100
Subtract the new number by the original number
135 - 343 = -208
-208 ÷ 343 = -0.6064139941690962
-0.6064139941690962 x 100 = -60.64%