21.5% is the change from 800 to 972
Calculation steps:
[( 972 - 800 ) ÷ 800] x 100 = 21.5%
Formula
Percentage change = [(972 - 800) / 800] x 100
Subtract the new number by the original number
972 - 800 = 172
172 ÷ 800 = 0.215
0.215 x 100 = 21.5%
Example