-79.79% is the change from 188 to 38
Calculation steps:
[( 38 - 188 ) ÷ 188] x 100 = -79.79%
Formula
Percentage change = [(38 - 188) / 188] x 100
Subtract the new number by the original number
38 - 188 = -150
-150 ÷ 188 = -0.7978723404255319
-0.7978723404255319 x 100 = -79.79%