-74.25% is the change from 334 to 86
Calculation steps:
[( 86 - 334 ) ÷ 334] x 100 = -74.25%
Formula
Percentage change = [(86 - 334) / 334] x 100
Subtract the new number by the original number
86 - 334 = -248
-248 ÷ 334 = -0.7425149700598802
-0.7425149700598802 x 100 = -74.25%