-70% is the change from 230 to 69
Calculation steps:
[( 69 - 230 ) ÷ 230] x 100 = -70%
Formula
Percentage change = [(69 - 230) / 230] x 100
Subtract the new number by the original number
69 - 230 = -161
-161 ÷ 230 = -0.7
-0.7 x 100 = -70%
Example