-98.05% is the change from 667 to 13
Calculation steps:
[( 13 - 667 ) ÷ 667] x 100 = -98.05%
Formula
Percentage change = [(13 - 667) / 667] x 100
Subtract the new number by the original number
13 - 667 = -654
-654 ÷ 667 = -0.9805097451274363
-0.9805097451274363 x 100 = -98.05%