-35.17% is the change from 981 to 636
Calculation steps:
[( 636 - 981 ) ÷ 981] x 100 = -35.17%
Formula
Percentage change = [(636 - 981) / 981] x 100
Subtract the new number by the original number
636 - 981 = -345
-345 ÷ 981 = -0.3516819571865443
-0.3516819571865443 x 100 = -35.17%