52.42% is the change from 641 to 977
Calculation steps:
[( 977 - 641 ) ÷ 641] x 100 = 52.42%
Formula
Percentage change = [(977 - 641) / 641] x 100
Subtract the new number by the original number
977 - 641 = 336
336 ÷ 641 = 0.5241809672386896
0.5241809672386896 x 100 = 52.42%