-87.07% is the change from 263 to 34
Calculation steps:
[( 34 - 263 ) ÷ 263] x 100 = -87.07%
Formula
Percentage change = [(34 - 263) / 263] x 100
Subtract the new number by the original number
34 - 263 = -229
-229 ÷ 263 = -0.870722433460076
-0.870722433460076 x 100 = -87.07%