-75.5% is the change from 351 to 86
Calculation steps:
[( 86 - 351 ) ÷ 351] x 100 = -75.5%
Formula
Percentage change = [(86 - 351) / 351] x 100
Subtract the new number by the original number
86 - 351 = -265
-265 ÷ 351 = -0.7549857549857549
-0.7549857549857549 x 100 = -75.5%