-75% is the change from 348 to 87
Calculation steps:
[( 87 - 348 ) ÷ 348] x 100 = -75%
Formula
Percentage change = [(87 - 348) / 348] x 100
Subtract the new number by the original number
87 - 348 = -261
-261 ÷ 348 = -0.75
-0.75 x 100 = -75%
Example