-33.44% is the change from 972 to 647
Calculation steps:
[( 647 - 972 ) ÷ 972] x 100 = -33.44%
Formula
Percentage change = [(647 - 972) / 972] x 100
Subtract the new number by the original number
647 - 972 = -325
-325 ÷ 972 = -0.3343621399176955
-0.3343621399176955 x 100 = -33.44%