-74.34% is the change from 343 to 88
Calculation steps:
[( 88 - 343 ) ÷ 343] x 100 = -74.34%
Formula
Percentage change = [(88 - 343) / 343] x 100
Subtract the new number by the original number
88 - 343 = -255
-255 ÷ 343 = -0.7434402332361516
-0.7434402332361516 x 100 = -74.34%