91.94% is the change from 521 to 1000
Calculation steps:
[( 1000 - 521 ) ÷ 521] x 100 = 91.94%
Formula
Percentage change = [(1000 - 521) / 521] x 100
Subtract the new number by the original number
1000 - 521 = 479
479 ÷ 521 = 0.9193857965451055
0.9193857965451055 x 100 = 91.94%