-86.23% is the change from 138 to 19
Calculation steps:
[( 19 - 138 ) ÷ 138] x 100 = -86.23%
Formula
Percentage change = [(19 - 138) / 138] x 100
Subtract the new number by the original number
19 - 138 = -119
-119 ÷ 138 = -0.8623188405797102
-0.8623188405797102 x 100 = -86.23%