71.4% is the change from 570 to 977
Calculation steps:
[( 977 - 570 ) ÷ 570] x 100 = 71.4%
Formula
Percentage change = [(977 - 570) / 570] x 100
Subtract the new number by the original number
977 - 570 = 407
407 ÷ 570 = 0.7140350877192982
0.7140350877192982 x 100 = 71.4%