-86.2% is the change from 993 to 137
Calculation steps:
[( 137 - 993 ) ÷ 993] x 100 = -86.2%
Formula
Percentage change = [(137 - 993) / 993] x 100
Subtract the new number by the original number
137 - 993 = -856
-856 ÷ 993 = -0.8620342396777442
-0.8620342396777442 x 100 = -86.2%