-71.26% is the change from 348 to 100
Calculation steps:
[( 100 - 348 ) ÷ 348] x 100 = -71.26%
Formula
Percentage change = [(100 - 348) / 348] x 100
Subtract the new number by the original number
100 - 348 = -248
-248 ÷ 348 = -0.7126436781609196
-0.7126436781609196 x 100 = -71.26%