138.54% is the change from 397 to 947
Calculation steps:
[( 947 - 397 ) ÷ 397] x 100 = 138.54%
Formula
Percentage change = [(947 - 397) / 397] x 100
Subtract the new number by the original number
947 - 397 = 550
550 ÷ 397 = 1.385390428211587
1.385390428211587 x 100 = 138.54%