-74.78% is the change from 341 to 86
Calculation steps:
[( 86 - 341 ) ÷ 341] x 100 = -74.78%
Formula
Percentage change = [(86 - 341) / 341] x 100
Subtract the new number by the original number
86 - 341 = -255
-255 ÷ 341 = -0.7478005865102639
-0.7478005865102639 x 100 = -74.78%