2.27% is the change from 971 to 993
Calculation steps:
[( 993 - 971 ) ÷ 971] x 100 = 2.27%
Formula
Percentage change = [(993 - 971) / 971] x 100
Subtract the new number by the original number
993 - 971 = 22
22 ÷ 971 = 0.02265705458290422
0.02265705458290422 x 100 = 2.27%