-16.36% is the change from 972 to 813
Calculation steps:
[( 813 - 972 ) ÷ 972] x 100 = -16.36%
Formula
Percentage change = [(813 - 972) / 972] x 100
Subtract the new number by the original number
813 - 972 = -159
-159 ÷ 972 = -0.16358024691358025
-0.16358024691358025 x 100 = -16.36%