42.21% is the change from 687 to 977
Calculation steps:
[( 977 - 687 ) ÷ 687] x 100 = 42.21%
Formula
Percentage change = [(977 - 687) / 687] x 100
Subtract the new number by the original number
977 - 687 = 290
290 ÷ 687 = 0.42212518195050946
0.42212518195050946 x 100 = 42.21%