81.43% is the change from 517 to 938
Calculation steps:
[( 938 - 517 ) ÷ 517] x 100 = 81.43%
Formula
Percentage change = [(938 - 517) / 517] x 100
Subtract the new number by the original number
938 - 517 = 421
421 ÷ 517 = 0.8143133462282398
0.8143133462282398 x 100 = 81.43%