-76% is the change from 350 to 84
Calculation steps:
[( 84 - 350 ) ÷ 350] x 100 = -76%
Formula
Percentage change = [(84 - 350) / 350] x 100
Subtract the new number by the original number
84 - 350 = -266
-266 ÷ 350 = -0.76
-0.76 x 100 = -76%
Example