-80.62% is the change from 258 to 50
Calculation steps:
[( 50 - 258 ) ÷ 258] x 100 = -80.62%
Formula
Percentage change = [(50 - 258) / 258] x 100
Subtract the new number by the original number
50 - 258 = -208
-208 ÷ 258 = -0.8062015503875969
-0.8062015503875969 x 100 = -80.62%