128.81% is the change from 427 to 977
Calculation steps:
[( 977 - 427 ) ÷ 427] x 100 = 128.81%
Formula
Percentage change = [(977 - 427) / 427] x 100
Subtract the new number by the original number
977 - 427 = 550
550 ÷ 427 = 1.288056206088993
1.288056206088993 x 100 = 128.81%